authx - Support Joomla users+sessions

diff --git a/ext/authx/Civi/Authx/Joomla.php b/ext/authx/Civi/Authx/Joomla.php
new file mode 100644 (file)
index 0000000..b36376b
--- /dev/null
+++ b/ext/authx/Civi/Authx/Joomla.php
@@ -0,0 +1,87 @@
+<?php
+/*
+ +--------------------------------------------------------------------+
+ | Copyright CiviCRM LLC. All rights reserved.                        |
+ |                                                                    |
+ | This work is published under the GNU AGPLv3 license with some      |
+ | permitted exceptions and without any warranty. For full license    |
+ | and copyright information, see https://civicrm.org/licensing       |
+ +--------------------------------------------------------------------+
+ */
+
+namespace Civi\Authx;
+
+class Joomla implements AuthxInterface {
+
+  /**
+   * Joomla constructor.
+   */
+  public function __construct() {
+    jimport('joomla.application.component.helper');
+    jimport('joomla.database.table');
+    jimport('joomla.user.helper');
+  }
+
+  /**
+   * @inheritDoc
+   */
+  public function checkPassword(string $username, string $password) {
+    $JUserTable = \JTable::getInstance('User', 'JTable');
+
+    $db = $JUserTable->getDbo();
+    $query = $db->getQuery(TRUE);
+    $query->select('id, name, username, email, password');
+    $query->from($JUserTable->getTableName());
+    $query->where('(LOWER(username) = LOWER(' . $db->quote($username) . ')) AND (block = 0)');
+    $db->setQuery($query, 0, 0);
+    $users = $db->loadObjectList();
+
+    if (!empty($users)) {
+      $user = array_shift($users);
+      if (is_callable(['JUserHelper', 'verifyPassword'])) {
+        $verified = \JUserHelper::verifyPassword($password, $user->password, $user->id);
+        return $verified ? $user->id : NULL;
+      }
+      else {
+        throw new \CRM_Core_Exception("This version of Joomla does not support verifyPassword().");
+      }
+    }
+
+    return NULL;
+  }
+
+  /**
+   * @inheritDoc
+   */
+  public function loginSession($userId) {
+    $user = new \JUser($userId);
+    $session = \JFactory::getSession();
+    $session->set('user', $user);
+  }
+
+  /**
+   * @inheritDoc
+   */
+  public function logoutSession() {
+    \JFactory::getSession()->destroy();
+  }
+
+  /**
+   * @inheritDoc
+   */
+  public function loginStateless($userId) {
+    \JFactory::getSession()->setHandler(new \CRM_Utils_FakeJoomlaSession('CIVISCRIPT'));
+    $user = new \JUser($userId);
+    $session = \JFactory::getSession();
+    $session->set('user', $user);
+  }
+
+  /**
+   * @inheritDoc
+   */
+  public function getCurrentUserId() {
+    $user = \JFactory::getUser();
+    return ($user->guest) ? NULL : $user->id;
+  }
+
+}